PartsTable TECHNICAL DATA SHEET

NSN 4820-01-163-4358Government record, cited

Seat, Valve4820-01-163-4358

NSN 4820-01-163-4358 · NIIN 011634358

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-163-4358 · 4820011634358 · NIIN 011634358 · 01-163-4358 · FSC 4820 Valves, Nonpowered · 807-1800 · 807-1800-24 2IN

Nearby stock numbers ← 4820-01-163-4357 Seat, Valve · 4820-01-163-4599 Valve, Safety Relief →

4820-01-163-4358 — Valves, Nonpowered

Features

Seat,valve — FSC 4820
Body Outside Diameter: 2.187 INCHES NOMINAL IN
Style Designator: PLAIN
Body Inside Diameter: 1.750 INCHES NOMINAL IN
Material: COBALT ALLOY OVERALL
Seat Angle in Deg: 30.000 NOMINAL
Seating Surface Shape: ANGULAR

Identification

NSN: 4820-01-163-4358
NIIN: 011634358
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Seat,valve, cataloged under National Stock Number 4820-01-163-4358, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-163-4358
Item Name	Seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Body Outside Diameter	2.187 INCHES NOMINAL IN
Style Designator	PLAIN
Body Inside Diameter	1.750 INCHES NOMINAL IN
Material	COBALT ALLOY OVERALL
Seat Angle in Deg	30.000 NOMINAL
Seating Surface Shape	ANGULAR

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 8

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4820-01-180-2035807-1800-6,7,8,17 1 1-2IN POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Sfc Valve Corporation

4820-01-182-1690807-1800 POSSIBLE MATCH

VALVE,GLOBE

Possible match (shared part number)Sfc Valve Corporation

4820-01-182-1691807-1800 PT-85 POSSIBLE MATCH

VALVE,GLOBE

Possible match (shared part number)Sfc Valve Corporation

4820-01-182-1735807-1800-24 1IN POSSIBLE MATCH

SEAT,VALVE

Possible match (shared part number)Sfc Valve Corporation

4820-01-189-0798807-87 AND 807-1800 POSSIBLE MATCH

VALVE,GLOBE

Possible match (shared part number)Sfc Valve Corporation

4730-01-192-7164807-1800-1IN POSSIBLE MATCH

YOKE,BUSHING

Possible match (shared part number)Sfc Valve Corporation

4820-01-219-3212807-1800 PIECE 6,7,8,17 1IN POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Sfc Valve Corporation

4820-01-554-0956803-2177525-C5A5AF POSSIBLE MATCH

VALVE,GLOBE

Possible match (shared part number)Naval Ship Systems Command

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
807-1800	D/9 Drawing number reference only Sfc Valve Corp
807-1800-24 2IN	3/9 Design control — primary reference Sfc Valve Corp

Related Parts

4820-01-180-2035POSSIBLE MATCH

STEM,FLUID VALVE

807-1800-6,7,8,17 1 1-2IN

4820-01-182-1690POSSIBLE MATCH

VALVE,GLOBE

807-1800

4820-01-182-1691POSSIBLE MATCH

VALVE,GLOBE

807-1800 PT-85

4820-01-182-1735POSSIBLE MATCH

SEAT,VALVE

807-1800-24 1IN

4820-01-189-0798POSSIBLE MATCH

VALVE,GLOBE

807-87 AND 807-1800

4730-01-192-7164POSSIBLE MATCH

YOKE,BUSHING

807-1800-1IN

4820-01-219-3212POSSIBLE MATCH

STEM,FLUID VALVE

807-1800 PIECE 6,7,8,17 1IN

4820-01-554-0956POSSIBLE MATCH

VALVE,GLOBE

803-2177525-C5A5AF

Frequently Asked Questions

What is NSN 4820-01-163-4358?

NSN 4820-01-163-4358 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-163-4358?

8 possible matches (shared part number, not a government interchangeability claim): 4820-01-180-2035, 4820-01-182-1690, 4820-01-182-1691. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-163-4358?

Key specifications for 4820-01-163-4358: Overall Height: 0.187 INCHES NOMINAL IN; Body Outside Diameter: 2.187 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.750 INCHES NOMINAL IN. 6 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-163-4358 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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